#include<stdio.h>
void exchang(int* a, int* b)
{
	int t;
	t = *a;
	*a = *b;
	*b = t;
}
int main()
{
	int a, b;
	scanf_s("%d%d", &a, &b);
	exchang(&a, &b);
	printf("a=%d,b=%d", a, b);
	return 0;
}